I have a dog that is about 55-59 into her pregnancy. I have been taking her temperature and it's highest was 100.1 and its lowest was 99.2. now I know this isn't between the temps. that they should be but my main concern is that she has stopped eating and hides it as of tonight. so my question is why is she doing this and how much longer to you think she's due?
ok, so now I just went down to check on her and she is eating. What is going on?

For most dogs the range is 59-63 days from the first breeding. This is just an estimate. If your dog was bred only once then go with this range. However there is around a 2 week + period in which a dog can be officially bred when in heat so your range increase significantly. Your dog is probably just getting ready. Your dog can eat right up to the time she whelps though it is not typical. Here is a good site to read to get some ideas on what she may do before and during whelping http://www.dogbreedinfo.com/whelping.htm. Remember if you do have any questions or concerns about your dog contact your vet. It is better to be safe than sorry. Good luck!